Reaction tube



FIG. 1 is a reference perspective view 1 of a reaction tube;

FIG. 2 is a reference perspective view 2 thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is sectional view taken along line 8—8 in FIG. 6; and,

FIG. 9 is sectional view taken along line 9—9 in FIG. 3. 

I claim an ornamental design for a reaction tube, as shown and described. 